'Extreme' weather warning in force in Britain as new heatwave hits

The sun rises above the London skyline, as a second heatwave is predicted for parts of the country, in London, Britain, August 11, 2022. REUTERS/Toby Melville

LONDON (Reuters) -A four-day "extreme heat" warning came into force in parts of England and Wales on Thursday, with temperatures poised to top 35 Celsius in another heatwave that could cause wildfires and pressure water supplies and transport services.

The Met Office said its amber warning, its second-most severe after red, will last until the end of Sunday, and cautioned that people vulnerable to extreme heat could face adverse health effects.